Dell EMC ME4 Series - Installing a DDIC; Populating Drawers

Installing a DDIC
NOTE: Failed disks must be replaced with approved disks. Contact your service provider for details.
1 Open the relevant drawer.
2 Align the DDIC with the target disk slot as shown in Figure 52. Removing a DDIC (2 of 2) and insert it into the disk slot.
3 Lower the DDIC into the disk slot.
a Push the DDIC downwards and hold it down.
b Move the slide latch in the direction shown in Figure 53. Installing a DDIC
Figure 53. Installing a DDIC
1 Slide latch (slides left) 2 Latch button (shown in locked position)
3 Drive Fault LED
4 Verify the following:
a The latch button is in the locked position, as shown in the illustration above.
b The Drive Fault LED is not lit.
5 Close the drawer.
Populating drawers
General guidelines for populating a drawer with DDICs are provided in the Dell EMC ME4 SeriesStorage System Deployment Guide.
Additional guidelines are provided for replacing disks in previously populated drawers, or populating enclosures delivered with the half-
populated enclosure conguration option.
Preparation
Customers with multiple enclosures may spread the 42 disks of an expansion package across those enclosures, provided the DDICs are
installed 14 at a time to completely ll empty rows. The installation pattern providing the best airow and thermal performance is described
in this section.
The drawers must be populated with DDICs in whole rows. Each drawer contains 3 rows of 14 DDICs. Rules and assumptions are listed:
• The minimum number of disks in an enclosure is 14.
• The number of rows must not dier by more than 1 between the top and bottom drawers.
• The rows should be populated from front to rear of drawer
• The disks of the expansion package must match the disks originally shipped with the 5U84 enclosure. Both groups of disks must share
the same model type and capacity.
NOTE
: Part numbers for expansion packages are not listed because they change over time when disks ship with new
rmware, or new disk models become available. Contact your account manager for part numbers.
• If the two groups of disks have dierent rmware, all disks must be updated with current/compatible rmware. See the Dell EMC ME4
Series Storage System Administrator’s Guide or online help for additional information about updating rmware.
Installation guidelines
The recommended order for partially populating drives in the 5U84 enclosure optimizes the airow through the chassis.
See the following illustrations:
• Figure 19. 5U84 enclosure—front panel components shows location and indexing of drawers accessed from the enclosure front panel.
Module removal and replacement
65